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Enzymatically modified LDL induces cathepsin H in human monocytes - Potential relevance in early atherogenesis
Enzymatically modified LDL induces cathepsin H in human monocytes - Potential relevance in early atherogenesis ARTERIOSCLEROSIS THROMBOSIS AND VASCULAR BIOLOGY Han, S. R., Momeni, A., Strach, K., Suriyaphol, P., Fenske, D., Paprotka, K., Hashimoto, S., Torzewski, M., Bhakdi, S., Husmann, M. 2003; 23 (4): 661-667Abstract
Modification with proteases and cholesterylesterase transforms LDL to a moiety that resembles lipoproteins isolated from atherosclerotic lesions and possesses atherogenic properties. To identify changes in monocyte-derived foam cells laden with enzymatically modified LDL (E-LDL), we compared patterns of the most abundant transcripts in these cells after incubation with LDL or E-LDL.Serial analyses of gene expression (SAGE) libraries were constructed from human monocytes after treatment with LDL or E-LDL. Several tags were differentially expressed in LDL-treated versus E-LDL-treated cells, whereby marked selective induction by E-LDL of cathepsin H was conspicuous. We show that cathepsin H is expressed in atherosclerotic lesions in colocalization with E-LDL. Furthermore, we demonstrate that LDL modified with cathepsin H and cholesterylesterase can confer onto LDL the capacity to induce macrophage foam cell formation and to induce cathepsin H.Cathepsin H could contribute to the transformation of LDL to an atherogenic moiety; the process might involve a self-sustaining amplifying circle.
View details for DOI 10.1161/01.ATV.0000063615.21233.BF
View details for Web of Science ID 000182165100021
View details for PubMedID 12615673